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Open degradation kinetics of organic fraction of municipal solid waste

机译：开放的降解动力学的有机部分城市固体垃圾

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The objective of this study was to determine the time required to achieve stabilization of organic fraction of municipal solid waste and to develop a decay model to describe volatile solid(VS)loss from open degradation of organic fraction of municipal solid waste in open dump sites.The role of soil contact and access to degradation by micro and meso + microorganisms were considered in this study as the driving factors of degradation.The weight loss in the organic fraction of municipal solid waste was monitored during the 30 days of degradation.The moisture content and volatile solids were rapidly lost within 6-8 days of exposure under dry conditions followed by slowing down and stabilization to low levels.The role of micro-fauna in the early stage of degradation was important.The function of micro-organisms was restricted due to the rapid fall in the moisture content of degrading municipal solid waste and this led the rest of the process to be carried out by meso and macro fauna.The degradation followed an exponential decay pattern with two potentially acceptable rate kinetics in two phases.Phase I followed zero-order kinetics,occurred till the 6th day of degradation and after a short transition,it was followed by phase II first-order kinetics.The rate constant of phase I and phase II are 16.6 g/kg/day and 0.024/day,respectively.As most of the waste was dried in the initial phase of degradation,it lowered the decomposition rates drastically.
机译：本研究的目的是确定的所需的时间达到稳定的有机部分市政固体废物和发展衰变模型来描述挥发性固体(VS)的损失从开放的降解的有机部分都市固体废物在开放转储网站。土壤接触和降解微观和中观+微生物被认为是在这项研究的驱动因素退化。部分城市固体垃圾的监控在30天的退化。内容和挥发性固体迅速丢失6 - 8天内暴露在干燥的条件下其次是减缓和稳定低的水平。退化的重要。微生物是限制由于快速水分含量的降低都市固体废物,这剩下的领导这个过程是由中观和宏观动物种群。衰变模式有两个潜在的可接受的率动力学两个阶段。零级动力学,发生到的第六天退化,经过短暂的过渡其次是二期一阶动力学。速率常数的一期和二期是16.60.024克/公斤/天/天,分别。浪费是干的初始阶段退化,它降低了分解率彻底。

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